Resolved Help 2g Eclipse RS no spark

[Daniel b]

So I bought a 1999 Mitsubishi Eclipse gs 420a engine, it cranks but won’t start and has no spark, I have changed crank sensor and coil pack. Any ideas?

 

[Daniel b]

yea, connector is supposed to face down, and make sure you have everything plugged in, I know how it is when you're unplugging and testing out stuff, it's easy to forget to plug tyhem back, wouldn't hurt to spray some connector spray in the connectors, or wd40, these are old cars so corrosion on connector pins can also cause electrics to fail

with the battery unplugged and let it sit? For a bit before re connecting

 

[Sirius1995]

Well you mind as well, and you can do hard reset for the computer by unplugging both terminals and hook them together, it empties capacitors and does a hard reset for the ECM, spray some connector spray etc. And you can plug it back right away unless bottle says differently, they have instructions

 

[Daniel b]

Well you mind as well, and you can do hard reset for the computer by unplugging both terminals and hook them together, it empties capacitors and does a hard reset for the ECM, spray some connector spray etc. And you can plug it back right away unless bottle says differently, they have instructions

Well I just have wd40

 

[Sirius1995]

Bottle of connector spray costs like $3 in AZ, it's useful in these cars in general so wouldn't hurt to have a bottle of that on your shelf

 

[Daniel b]

Bottle of connector spray costs like $3 in AZ, it's useful in these cars in general so wouldn't hurt to have a bottle of that on your shelf

Yeah if I can’t make a run to the store today would wd40 be good?

 

[Sirius1995]

Yea you can use wd40 or crc, but it's not as effective so let it soak in a few minutes amd unplug-replug a few times

 

[Daniel b]

Yea you can use wd40 or crc, but it's not as effective so let it soak in a few minutes amd unplug-replug a few times

alright so what connectors do I hook together to reset ecu

 

[BLACK'98DSM]

To reset the electrical systems all you have to do is pull the positive battery cable for 30 seconds.

 

[Sirius1995]

To reset the electrical systems all you have to do is pull the positive battery cable for 30 seconds.

To empty capacitors, hook up positive and negative cables for 10-15minutes

I've fixed so many cars just by doing that, also erases history codes from the system

 

[Daniel b]

I've fixed so many cars just by doing that, also erases history codes from the system

Wait so ecm or ecu because isn’t the ecm behind radio

 

[Sirius1995]

ECM and ecu is the same thing

 

[Daniel b]

ECM and ecu is the same thing

oh okay I was confused

 

[Sirius1995]

Electronic computer module = ECM
Electronic computer unit = ECU

Different terms but means the same
ECU is universally used, ECM is more commonly used in the dealerships, makes it more formal

 

[Daniel b]

Electronic computer module = ECM
Electronic computer unit = ECU

Different terms but means the same
ECU is universally used, ECM is more commonly used in the dealerships, makes it more formal

Oh okay thank you

Oh okay thank you

Electronic computer module = ECM
Electronic computer unit = ECU

Different terms but means the same
ECU is universally used, ECM is more commonly used in the dealerships, makes it more formal

I pretty much cleaned all connectors etc and reset ecu still no spark

 

[BLACK'98DSM]

Have you checked for power at the coil?

 

[Daniel b]

Have you checked for power at the coil?

No not yet but do you have a idea what this wire is for

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Have you checked for power at the coil?

Also what can I use to test power at coil

 

[BLACK'98DSM]

Use a volt meter or a multi meter.

 

[Daniel b]

Have you checked for power at the coil?

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[Sirius1995]

Change the camshaft sensor

 

[Daniel b]

Change the camshaft sensor

I’ll try that

Use a volt meter or a multi meter.

Do you know what setting on this multi meter

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[BLACK'98DSM]

20 Vdc. 20 meaning it measures a maximum of 20 volts, you should read around 12. Vdc meaning volts direct current.

 

[dustyboner]

No not yet but do you have a idea what this wire is for

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The red/white wire is +12v for the power seats

 

[Daniel b]

20 Vdc. 20 meaning it measures a maximum of 20 volts, you should read around 12. Vdc meaning volts direct current.

I’m just waiting for my friend with a scanner to come buy and hook it up.

 

[Daniel b]

20 Vdc. 20 meaning it measures a maximum of 20 volts, you should read around 12. Vdc meaning volts direct current.
So I disconnected power to coil and the relays keep clicking.

 

[BLACK'98DSM]

20 Vdc. 20 meaning it measures a maximum of 20 volts, you should read around 12. Vdc meaning volts direct current.
So I disconnected power to coil and the relays keep clicking.

Which relays? Just because you unplugged the coil doesn't mean they don't have power.